I answered that question earlier in this thread, but it's a fair question so I'll answer it again.
As I said in the entry you quoted, I worked for years with a IIIf, M2 and M4, and I loved those cameras, especially the M4. But I've been working with digital for nearly seven years now and it's awfully hard to go back to film. I don't have room for a darkroom in Colorado or in Florida, so I wouldn't be making gelatin-silver prints. I'd scan the negatives or transparencies into Photoshop. But processing Tri-X at the sink means tanks, reels, dark bags, beakers, storage bottles, etc., etc., and bulk film winders. Processing color means sending it out, which is a pain and, nowadays, an unnecessary delay.
Furthermore, though I suspect you'll disagree, you can get a lot better color with digital. You also can switch back and forth between ISO without having to rewind a roll of film and switch or having to carry several cameras. Furthermore, I can carry enough digital storage in my back pocket to fill a suitcase in rolls of film.
As far as the crops are concerned, my D2X and D100 crop at 1.5X instead of the M8's 1.3X, and it's never been a problem. All you need is a shorter lens.